CN101448295B - Mobile broadband wireless access system for transferring service information during handover - Google Patents
Mobile broadband wireless access system for transferring service information during handover Download PDFInfo
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- CN101448295B CN101448295B CN2008101867367A CN200810186736A CN101448295B CN 101448295 B CN101448295 B CN 101448295B CN 2008101867367 A CN2008101867367 A CN 2008101867367A CN 200810186736 A CN200810186736 A CN 200810186736A CN 101448295 B CN101448295 B CN 101448295B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/24—Reselection being triggered by specific parameters
- H04W36/26—Reselection being triggered by specific parameters by agreed or negotiated communication parameters
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
- H04W28/24—Negotiating SLA [Service Level Agreement]; Negotiating QoS [Quality of Service]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W92/00—Interfaces specially adapted for wireless communication networks
- H04W92/16—Interfaces between hierarchically similar devices
- H04W92/20—Interfaces between hierarchically similar devices between access points
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Abstract
The present invention is related to a mobile broadband wireless access system for transferring service information during handover. The invention relates to transmitting quality of service (QoS) information of a target base station (13) for admitted service flows during a handover operation. The invention comprises providing a service to a mobile station (11) from a serving base station (12) and receiving at the serving base station (12) a handover request (S107) from the mobile station (11). The serving base station (12) then provides a handover notification to a target base station (13) (S108), wherein the handover notification comprises a QoS parameter associated with the service. The serving base station (12) then receives from the target base station (11) a handover notification response (S109), wherein the handover notification response comprises service level prediction information that is determined in response to the QoS parameter associated with the service. Finally, the serving base station (12) provides a handover response to the mobile station (11) (S110), the handover response comprising the service level prediction information.
Description
The application is to be number to be 200580007135.X (PCT/KR2005/000612) on March 4th, 2005, national applications the applying date, and denomination of invention is divided an application for the patent application of " between transfer period, transmitting the mobile wide-band wire-less accessing system of information on services ".
Technical field
The present invention relates to a kind of mobile wide-band wire-less accessing system that is used for during handover operation, transmitting information on services, and more specifically, relate to during handover operation and send service quality (QoS) information to target BS for a plurality of service flow that allow.
Background technology
Usually, according to the request of mobile subscriber station (MSS) or base station (BS), in BWA, carry out handover operation.One the handover operation that carries out from current serving BS to a plurality of target BS, mobile subscriber station must be provided to each target BS with service quality (QoS) information of the service flow that allows in the current mobile user platform.
This QoS information that is provided to target BS comprises the desired bandwidth and the desired service class name of the service that is allowed of current mobile user platform.Yet target BS only utilizes this QoS information can not fully guarantee the QoS of special services.In mobile subscriber station, allow under the situation of a plurality of service flow, which service flow is with guaranteed information in the service flow that expression is not provided and is allowed.
For instance, suppose mobile subscriber station from current serving BS receive real time kinematics image download service and fixed speed service as through the voice of Internet Protocol (Voice Over InternetProtocol, VoIP) both.Although this mobile subscriber station is receiving two services,, guarantee that about a QoS the required bandwidth and the information of service class name are sent to target BS if need the situation of switching.Yet, will not be used to keep the concrete quality of handoff information of service quality of the service of each permission to be sent to target BS.Therefore, be difficult to confirm to guarantee which QoS in service flow of each permission.And target BS is difficult to predict the estimation QoS grade of each service.
Summary of the invention
The present invention is directed to during handover operation and send service quality (QoS) information to target BS for a plurality of service flow that allow.
To set forth additional features of the present invention and advantage in the explanation below, and this will be conspicuous to a certain extent from following explanation, perhaps can from practice of the present invention, understand.Can realize and obtain these purposes of the present invention and other advantages through the structure of in printed instructions and claim and accompanying drawing, specifically noting.
For realizing these and other advantages; And according to the object of the invention; As in this practical implementation and broadly described; Come embodiment of the present invention with a kind of method that in wireless communication system, in the travelling carriage relevant, receives service quality (QoS) information with handover operation; This method comprises: receive at least one service from serving BS, scan at least one target BS to carry out handover operation, the handoff request of request and serving BS; And receive the handoff response comprise the service level information of forecasting from serving BS, wherein this service level information of forecasting by this at least one target BS in response to the relevant qos parameter of this at least one service that receives from serving BS and confirm.
Preferably, this qos parameter comprises delay (latency) information, retained business speed (reserved traffic rate), tolerable service rate (tolerable traffic rate) and keeps at least one of service rate (sustained traffic rate).This service level information of forecasting comprises following at least a: (1) does not have service flow to use for this travelling carriage, and (2) all service flow can be used, and (3) some service flow can be used, and (4) do not have the service level prediction available.In addition, this handoff response further comprises the target BS of the recommendation that travelling carriage should switch to.Preferably, definite this at least one target BS that will switch to of travelling carriage.
In one aspect of the invention, this method further comprises: from this at least one service of serving BS request, and from serving BS reception serving grant message.Preferably, the one of which at least of this serving grant message qos parameter value that comprises this at least one service of being asked and the indication of the relevant possibility that activates this at least one service that (activate) asked.
In one embodiment of the invention, a kind of method that service quality (QoS) information relevant with handover operation is provided in wireless communication system comprises: provide at least one service to travelling carriage from serving BS; Receive handoff request at serving BS from this travelling carriage; Provide switching notice to arrive at least one target BS, wherein this switching notice comprises relevant qos parameter of at least one service with this; Receive switching notice response from this at least one target BS, wherein this switching notice response comprises response at least one serves relevant qos parameter and definite service level information of forecasting with this; And providing handoff response to arrive this travelling carriage, this handoff response comprises this service level information of forecasting.
Preferably, this qos parameter comprises deferred message, retained business speed, tolerable service rate and keeps at least one of service rate.This service level information of forecasting comprises following at least a: (1) does not have service flow to use for this travelling carriage, and (2) all service flow can be used, and (3) some service flow can be used, and (4) do not have the service level prediction available.In addition, this handoff response further comprises the target BS of the recommendation that travelling carriage should switch to.Preferably, definite this at least one target BS that will switch to of travelling carriage.
In one aspect of the invention, this method further comprises: receive the services request that is used at least one service from this travelling carriage; The existence of the Radio Resource of this at least one service that inspection can be used for being asked; If can using, Radio Resource gives this travelling carriage of having asked this at least one service with allocation of radio resources; And to this travelling carriage transmission serving grant message.
Preferably, the one of which at least of this serving grant message qos parameter value that comprises this at least one service of being asked and the indication of the relevant possibility that activates this at least one service of being asked.In addition, this serving BS will send to target BS about the information of the service flow of this at least one permission, and the qos parameter value that permission will be used for the service flow of this at least one permission periodically is provided to this target BS.
In another aspect of this invention, this method further comprises: provide to switch and confirm to this at least one target BS, receive from travelling carriage at this serving BS and switch indication, and interrupt the communication between this serving BS and this travelling carriage.
In another embodiment, realize the present invention with a kind of travelling carriage that is used for receiving at wireless communication system service quality (QoS) information relevant with handover operation, this travelling carriage comprises: be used for from the device of at least one service of serving BS reception; Be used to scan at least one target BS to carry out the device of handover operation; And be used to ask the device with the handoff request of this serving BS; Wherein this device that is used to receive this at least one service receives the handoff response that comprises the service level information of forecasting from this serving BS, wherein this service level information of forecasting by this at least one target BS response with receive from serving BS this at least one serve relevant qos parameter and definite.
Preferably, this qos parameter comprises deferred message, retained business speed, tolerable service rate and keeps at least one of service rate.This service level information of forecasting comprises following at least a: (1) does not have service flow to use for this travelling carriage, and (2) all service flow can be used, and (3) some service flow can be used, and (4) do not have the service level prediction available.In addition, this handoff response further comprises the target BS of the recommendation that travelling carriage should switch to.Preferably, definite this at least one target BS that will switch to of this travelling carriage.
In one aspect of the invention, the device that is used to ask handoff request is from this at least one service of serving BS request, and the device that is used to receive this at least one service is from this serving BS reception serving grant message.Preferably, the one of which at least of this serving grant message qos parameter value that comprises this at least one service of being asked and the indication of the relevant possibility that activates this at least one service of being asked.
In one embodiment of the invention; A kind of network that is used for providing at wireless communication system service quality (QoS) information relevant with handover operation is provided; It comprises: be used for providing at least one to serve the device of travelling carriage from serving BS; And the device that is used for receiving from this travelling carriage handoff request at this serving BS; Wherein be used to provide this device of this at least one service to provide switching notice at least one target BS; Wherein this switching notice comprises with this qos parameter that at least one service is relevant, and this device that wherein is used to receive this handoff request receives switching notice response from this at least one target BS, and wherein this switching notice response comprises and responds that at least one serves relevant qos parameter and definite service level information of forecasting with this; Wherein be used to provide the device of at least one service to provide handoff response to arrive this travelling carriage, this handoff response comprises this service level information of forecasting.
Preferably, this qos parameter comprises deferred message, retained business speed, tolerable service rate and keeps at least one of service rate.This service level information of forecasting comprises following at least a: (1) does not have service flow to use for this travelling carriage, and (2) all service flow can be used, and (3) some service flow can be used, and (4) do not have the service level prediction available.In addition, this handoff response further comprises the target BS of the recommendation that travelling carriage should switch to.Preferably, definite this at least one target BS that will switch to of this travelling carriage.
In one aspect of the invention, this equipment further comprises: the device that is used for receiving from this travelling carriage the services request that is used at least one service; Be used to check the existence of the Radio Resource of this at least one service that can be used for being asked, and if Radio Resource can use then allocation of radio resources given the device of having asked this travelling carriage of this at least one service; And the device that sends serving grant message to this travelling carriage.
Preferably, the one of which at least of this serving grant message qos parameter value that comprises this at least one service of being asked and the indication of the relevant possibility that activates this at least one service of being asked.In addition, this serving BS will send to target BS about the information of the service flow of this at least one permission, and the qos parameter value that permission will be used for the service flow of this at least one permission periodically is provided to this target BS.
In another aspect of this invention; This network further comprises: be used to provide switching to confirm the device to this at least one target BS; Be used for receiving the device that switches indication from travelling carriage, and be used to interrupt the communicating devices between this serving BS and this travelling carriage at this serving BS.
Should be appreciated that generality explanation and following specifying above the present invention all are exemplary and indicative, and be intended to provide of the present invention further understanding like claim.
Description of drawings
The application comprises accompanying drawing to provide further understanding of the present invention, and it is incorporated into and constitutes the application's a part.Accompanying drawing shows embodiments of the invention, and works with specification one and to explain principle of the present invention.
Fig. 1 is the flow chart that transmits quality of service information according to an embodiment of the invention; With
Fig. 2 is the flow chart that between transfer period, transmits quality of service information according to an embodiment of the invention.
Embodiment
The present invention relates in BWA, between transfer period, send service quality (QoS) information to target BS for a plurality of service flow that allow.
With reference to figure 1, in one embodiment of the invention, mobile subscriber station (MSS) 11 sends service request information to serving BS (BS # 1) 12, to receive certain applications service (step S101).This service request information comprises the information of the service flow that will activate and/or receives the required qos parameter of this service.
Serving BS 12 inspection that has received this service request information can be used for the existing of Radio Resource (step S102) of 11 requested service of mobile subscriber station.If Radio Resource can be used, then serving BS 12 is to these mobile subscriber station 11 distributing radio resource of having asked this service.Afterwards, will represent that through serving grant message the information whether serving BS 12 can carry out 11 requested service of mobile subscriber station stream sends to mobile subscriber station 11 (step S104).This serving grant message comprises the one of which at least of indication of the possibility of this service flow of being asked by the qos parameter value of 11 requested service of mobile subscriber station stream and relevant activation.
In case provide application service to arrive mobile subscriber station 11 (step S105), then serving BS 12 will send to target BS (BS # 2) 13 (step S106) about the information of a plurality of service flow of allowing.When doing like this, can the qos parameter value that be used for these a plurality of service flow periodically be provided to target BS 13.
Although the mode with above-mentioned allows service flow; If but mobile subscriber station 11 (for example sends handoff request message; MOB_MSSHO_REQ) (step S107), then serving BS 12 sends and switches preparatory notification message (HO-pre-notification) to target BS 13 (step S108).This switches preparatory notification message (HO-pre-notification) can comprise the required information of service flow that is used to keep each permission.Preferably, the said required information of service flow of keeping this permission comprise service flow identifier (SFID), service class name, with the corresponding qos parameter of each service flow and respectively with the corresponding particular value of this qos parameter.For example, this qos parameter can be that maximum delay, minimum retained business speed, minimum tolerable service rate and maximum are kept service rate etc.
Whether it can allow new mobile subscriber station 11 to have received these each target BS 13 decisions of switching preparatory notification message (HO-pre-notification).Afterwards, should determine to send to serving BS 12 (step S109) through switching preparatory push-notification-answer message (HO-pre-notification-response).This switches preparatory push-notification-answer message (HO-pre-notification-response) can comprise that expression can be provided to the information of estimation service level of the service flow that is allowed of current mobile user platform 11 from target BS 13.
Subsequently, the serving BS 12 that receives the preparatory push-notification-answer message of this switching (HO-pre-notification-response) from target BS 13 respectively will send to mobile subscriber station 11 (step S110) about the information of the service level that can be provided by target BS 13.
With reference to figure 2, in another embodiment of the present invention, there are a plurality of target BS, mobile subscriber station (MSS) 21 can therefrom be selected to carry out handover operation with it.Preferably, in case mobile subscriber station 21 provides application service, for example, and as described in the step S101-S105 of Fig. 1, this mobile subscriber station 21 scanning neighbor base stations 22,23,34 (step S201) then.If mobile subscriber station 21 decisions are switched, then mobile subscriber station 21 sends handoff request message (MOB_MSSHO_REQ) to serving BS 22 (BS # 1) (step S202).
Then, serving BS 22 sends the mobile subscriber station 21 (step S203 and S204) that the preparatory notification message of handoff request (HO-pre-notification) exists request to switch with notification target base station 23 and 24 (being respectively BS # 2 and BS # 3).
For example, table 1 and table 2 show the structure of the preparatory notification message of handoff request (HO-pre-notification).
[table 1]
| Field | Size | Content |
| Global?Header | 152 bits | |
| ?For(j＝0；j＜Num Records；j++{ | ||
| ?MSS?unique idenfier | 48 bits | The 48 bit unique identifiers that MSS uses (are perhaps provided by I-am-host-of message by MSS |
| Estimated?Time?to ?HO | 16 bits | With millisecond meter with respect to timestamp.Value is the time of the known estimation of 0 expression. |
| N_NSIE | The number of network service information elements (element) | |
| For (k=0; K＜N_NSIE; K++) | ||
| Field Size | 16 bits | The size of following TLV information encoded field |
| TLV encoded information | Variable | Like the TLV information that allows on the DSA_REQ_MAC message |
| } | ||
| } | ||
| Security field | TBD | The means of this message of authentication |
| CRC filed | 32 bits | IEEE CRC-32 |
[table 2]
| Field | Size | Content |
| Global?Header | 152 bits | |
| For(j＝0；j＜Num Records； j++{ | ||
| MSS?unique?idenfier | 48 bits | The 48 bit unique identifiers that MSS uses (are perhaps provided by I-am-host-of message by MSS |
| Estimated?Time?to?HO | 16 bits | With millisecond meter with respect to timestamp.Value is the time of the known estimation of 0 expression. |
| Required BW | 8 bits | The required bandwidth of MSS (to guarantee the minimum packets transfer of data) |
| For (i=0; I＜Num_SFID_Records; I++) | ||
| SFID | ||
| For (k=0; K＜Num_QoS_Records; K++) | ||
| Required QoS | ||
| Field Size | Variable | Qos parameter definition coding, it is united definition and is exclusively used in the qos parameter set that this SFID allows |
| } | ||
| } | ||
| } | ||
| Security field | TBD | The means of this message of authentication |
In the present invention; Be utilized in the preparatory notification message of the handoff request of sending between transfer period (HO-pre-notification), will with send to target BS 23 and 24 corresponding to the relevant parameter of the QoS of the service flow of each permission and with the corresponding value of these parameters from serving BS 22.In other words, the preparatory notification message of this handoff request (HO-pre-notification) comprises qos parameter and the value corresponding with these parameters.
Each target BS 23 and 24 that has received the preparatory notification message of this handoff request (HO-pre-notification) all sends and switches preparatory push-notification-answer message (HO-pre-notification-response) to this serving BS 22 (step S205 and S206).Preferably, this switches preparatory push-notification-answer message (HO-pre-notification-response) and comprises the information that QoS is relevant.
Switch the information of the service level of the service flow that is allowed that information that this QoS that preparatory push-notification-answer message (HO-pre-notification-response) sends preferably includes the existence of estimating about service for information about and expression estimate through this, it can be provided to current mobile user platform 21 from each of target BS 23 and 24.
This QoS can be the identical information of service level information of forecasting that is sent to mobile subscriber station 21 with serving BS 22 through switching response message for information about.Preferably, this information be can divide and " all service flow can be used ", " several service flow can be used ", " not having service flow to use " or the like represented.
Should switch an exemplary structure of preparatory push-notification-answer message (HO-pre-notification-response) shown in the table 3.
[table 3]
| Field | Size | Content |
| Global?Header | 152 bits | |
| For(j＝0；j＜Num Records；j++{ | ||
| MSS?unique?idenfier | 48 bits | The 48 bit unique identifiers that MSS uses (perhaps providing) by I-am-host-of message by MSS |
| Service?level ?prediction | 16 bits | The service level 0=of expection does not serve and possibly be used for this MSS.Some service of 1=can be used for licensing to or several service flow of this MSS.2=is for the service flow of each mandate, can set up MAC with the QoS of the qos parameter set appointment of being authorized and connect.3=does not have the service level prediction available. |
| } | ||
| Security field | TBD | The means of this message of authentication |
| CRC filed | 32 bits | IEEE CRC-32 |
Serving BS 22 is selected a base station that is suitable for switching execution from target BS 23 and 24.Serving BS 22 sends to selected target BS with switch acknowledgment message (HO-confirm) then.In the case, selected base station is target BS 24 (step S207).This target BS 24 (step S208) that serving BS 22 is recommended as the base station of selecting to mobile subscriber station 21 through switching response message (MOB_HO_RSP).
An exemplary configurations of this switching response message (MOB_HO_RSP) has been shown in the table 4.
[table 4]
| Sentence structure | Size | Content |
| MOB_BSHO-RSP_Message_Fort ?mat() | ||
| ?Management Message Type＝53 | 8 bits | |
| Estimated?HO?time | 8 bits | Target BS should appear sequentially, makes that the base station appear at first is to recommend maximum one, and the base station that appears at last is to recommend minimum one.N_Recommended can draw from known message-length. |
| For (j=0; J＜N_Recommended; J++) | ||
| Target BS-ID | 48 bits | |
| Service level prediction | 8 bits | The service level 0=of expection does not serve and possibly be used for this MSS.Some service of 1=can be used for licensing to or several service flow of this MSS.2=is for the service flow of each mandate, can set up MAC with the QoS of the qos parameter set appointment of being authorized and connect.3=does not have the service level prediction available. |
| } | ||
| } |
Embodiments of the invention have been explained the request execution switching of being done according to mobile subscriber station 21.Yet, send the situation that the QoS information that is used for each service flow that allows can be applicable to carry out according to the request that the base station is done switching.Therefore, each QoS of the present invention's service flow that in switching, can keep being allowed.
Although in the environment of mobile communication, described the present invention, the present invention can also be used in the wireless communication system of use such as the mobile device of PDA that is furnished with wireless communication ability and kneetop computer.In addition, some term that uses for description the present invention is not to be understood that for limiting the scope of the present invention to the wireless communication system of some type, like UMTS.The present invention can also be applied to other wireless communication systems that use different air interfaces and/or physical layer, as, TDMA, CDMA, FDMA, WCDMA etc.
These preferred embodiments can be implemented as and utilize standard programming and/or engineering to produce method, device or the article of software, firmware, hardware or its combination.The term " article of production " of this use be meant hardware logic (as; IC chip, field programmable gate array (FPGA), application-specific integrated circuit (ASIC) (ASIC) etc.) or computer-readable medium (as; Magnetic storage medium (as; Hard disk drive, floppy disk, tape etc.), optical storage (CD-ROM, CD etc.), the non-volatile memory apparatus that is prone to become estranged (as, EEPROM, ROM, PROM, RAM, DRAM, firmware, FPGA etc.) in the code or the logic that realize.
Can visit and carry out the code in this computer-readable medium through processor.The code of wherein having realized preferred embodiment can further visit from file server through transmission medium or through network.In this case, realize that wherein the article of said code can comprise transmission medium, such as Network transmission line, wireless transmission medium, signal, wireless program request, infrared signal etc. through spatial transmission.Certainly, it will be understood by those skilled in the art that for this structure and can carry out multiple modification, and do not depart from the scope of the present invention, and the article of said production can comprise any information bearing medium well known in the prior art.
To those skilled in the art, it is obvious that, can carry out various modifications and variation among the present invention.Therefore, the invention is intended to cover the interior various modifications and the variation of scope of accompanying claims and equivalent thereof.
Claims (20)
1. method that in wireless communication system, in travelling carriage, receives the information relevant with handover operation, said method comprises:
Send to serving BS to handoff request message from said travelling carriage; Wherein said handoff request message makes said serving BS to the target BS transmission information relevant with the service flow of keeping at least one permission, and the wherein said information relevant with the service flow of keeping permission comprises service quality (QoS) parameter set of service flow of service flow identifier and each permission of the service flow of each permission; And
Said travelling carriage receives the switching response message that is used to respond said handoff request message from said serving BS, and said switching response message comprises the service level prediction that can be provided to the service flow that is allowed of travelling carriage from target BS,
Wherein, said service level prediction expression following one of them:
(1) service possibly not be used for this travelling carriage;
(2) some service can be used for allowing or several service flow to this travelling carriage;
(3) for the service flow of each permission, can set up medium access control (MAC) with the specified service quality of each QoS parameter set and connect;
(4) there is not the service level prediction available.
2. the method for claim 1, wherein said QoS parameter set comprises that minimum retained business speed and maximum keep service rate.
3. the method for claim 1, further comprise: said travelling carriage determines whether execution is switched to said target BS.
4. the method for claim 1, wherein said switching response message comprises that further said travelling carriage should carry out the target BS of the recommendation of said handover operation with it.
5. the method for claim 1, wherein said switching response message comprises the field of the switching time of estimation.
6. the method for claim 1, wherein before said travelling carriage sends to the step of serving BS to handoff request message, also comprise the steps:
Send service request information to said serving BS from said travelling carriage, said service request information comprises the information relevant with the service flow that will activate; And
Said travelling carriage receives the response message of said service request information from said serving BS, and it comprises the qos parameter of institute's requested service stream and the indication of the possibility that said service flow is activated.
7. method that the information relevant with handover operation is provided in wireless communication system, said method comprises:
Serving BS receives handoff request message from travelling carriage;
Reception in response to said handoff request message; Send the information relevant with the service flow of keeping at least one permission to target BS, the wherein said information relevant with the service flow of keeping permission comprises service quality (QoS) parameter set of service flow of service flow identifier and each permission of the service flow of each permission;
Said serving BS receives the service level prediction that can be provided to the service flow that is allowed of travelling carriage from target BS from target BS; And
Send the switching response message that is used to respond said handoff request message to said travelling carriage, said switching response message comprises the above-mentioned service level prediction that can be provided to the service flow that is allowed of travelling carriage from target BS,
Wherein, said service level prediction expression following one of them:
(1) service possibly not be used for this travelling carriage;
(2) some service can be used for allowing or several service flow to this travelling carriage;
(3) for the service flow of each permission, can set up medium access control (MAC) with the specified service quality of each QoS parameter set and connect;
(4) there is not the service level prediction available.
8. method as claimed in claim 7, wherein, said QoS parameter set comprises that minimum retained business speed and maximum keep service rate.
9. method as claimed in claim 7, wherein, said switching response message comprises that further said travelling carriage should carry out the target BS of the recommendation of said handover operation with it.
10. method as claimed in claim 7, wherein, said switching response message comprises the field of the switching time of estimation.
11. method as claimed in claim 7 is wherein, before said serving BS receives the step of handoff request message from travelling carriage, further comprising the steps of:
Said serving BS receives service request information from said travelling carriage, and said service request information comprises the information relevant with the service flow that will activate; And
Said serving BS sends the response message of said service request information to said travelling carriage, and it comprises the qos parameter of institute's requested service stream and the indication of the possibility that said service flow is activated.
12. a travelling carriage, said travelling carriage comprises:
Transmitter; Be configured to a handoff request message and send to serving BS; Wherein said handoff request message makes said serving BS to the target BS transmission information relevant with the service flow of keeping at least one permission, and the wherein said information relevant with the service flow of keeping permission comprises service quality (QoS) parameter set of service flow of service flow identifier and each permission of the service flow of each permission; And
Receiver; Be configured to receive the switching response message that is used to respond said handoff request message from said serving BS; Said switching response message comprises the service level prediction that can be provided to the service flow that is allowed of travelling carriage from target BS; Wherein, said service level prediction expression following one of them:
(1) service possibly not be used for this travelling carriage;
(2) some service can be used for allowing or several service flow to this travelling carriage;
(3) for the service flow of each permission, can set up medium access control (MAC) with the specified service quality of each QoS parameter set and connect;
(4) there is not the service level prediction available.
13. travelling carriage as claimed in claim 12, wherein, said QoS parameter set comprises that minimum retained business speed and maximum keep service rate.
14. travelling carriage as claimed in claim 12, wherein, said travelling carriage is configured to determine whether execution is switched to said target BS.
15. travelling carriage as claimed in claim 12, wherein, said switching response message comprises the field of the switching time of estimation.
16. travelling carriage as claimed in claim 12; Wherein, Before said transmitter sent to serving BS to handoff request message, said transmitter sent service request information to said serving BS, and said service request information comprises the information relevant with the service flow that will activate; And said receiver receives the response message of said service request information from said serving BS, and it comprises the qos parameter of institute's requested service stream and the indication of the possibility that said service flow is activated.
17. a device that is used for promoting at wireless communication system handover operation, said device comprises:
Receiver is configured to receive handoff request message from travelling carriage;
Transmitter; Be configured to reception in response to said handoff request message; Send the information relevant to target BS with the service flow of keeping at least one permission; The wherein said information relevant with the service flow of keeping permission comprises service quality (QoS) parameter set of service flow of service flow identifier and each permission of the service flow of each permission
Wherein, said receiver further is configured to receive the service level prediction that can be provided to the service flow that is allowed of travelling carriage from target BS from said target BS; And
Wherein said transmitter further is configured to send the switching response message that is used to respond said handoff request message to said travelling carriage, and said switching response message comprises the above-mentioned service level prediction that can be provided to the service flow that is allowed of travelling carriage from target BS;
Wherein, said service level prediction expression following one of them:
(1) service possibly not be used for this travelling carriage;
(2) some service can be used for allowing or several service flow to this travelling carriage;
(3) for the service flow of each permission, can set up medium access control (MAC) with the specified service quality of each QoS parameter set and connect;
(4) there is not the service level prediction available.
18. device as claimed in claim 17, wherein, said QoS parameter set comprises that minimum retained business speed and maximum keep service rate.
19. device as claimed in claim 17, wherein, said switching response message comprises the field of the switching time of estimation.
20. device as claimed in claim 17, wherein, before said receiver received handoff request message from travelling carriage, said receiver received service request information from said travelling carriage, and said service request information comprises the information relevant with the service flow that will activate; And said transmitter sends the response message of said service request information to said travelling carriage, and it comprises the qos parameter of institute's requested service stream and the indication of the possibility that said service flow is activated.
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| CN1382355A (en) * | 1999-09-24 | 2002-11-27 | 诺基亚公司 | Handover between wireless telecommunication networks/systems |
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| EP1723821B1 (en) | 2010-08-04 |
| US20050239465A1 (en) | 2005-10-27 |
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| JP2009077427A (en) | 2009-04-09 |
| CA2698556A1 (en) | 2005-09-15 |
| EP1723821A2 (en) | 2006-11-22 |
| JP4850890B2 (en) | 2012-01-11 |
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| US20070291699A1 (en) | 2007-12-20 |
| CN1930903B (en) | 2010-10-13 |
| WO2005084146A2 (en) | 2005-09-15 |
| EP2031923B1 (en) | 2010-12-22 |
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